Crawling
This is the process by which search engine robots, also called spiders, crawl the Internet for new or updated pages.
The robot visits the page, downloads its content, and identifies all the links that lead to other pages, so that it can then visit them. This process is repeated continuously, allowing it to track changes to the pages and discover new ones.
Rendering ( Rendering )
Once a crawler has fetched a page, the search engine needs to understand how the page is displayed to the user. Often, websites use JavaScript to generate content or to control its display.
The rendering process involves the search engine simulating the browser by running JavaScript code and observing what changes occur on the page. This tells the search engine how the page will look to germany phone number the end user and what content will be available.
Indexing
Once the page has been crawled and rendered, its content is analyzed and added to the search engine index.
The index is a huge database containing information about all the pages that the search engine robot has visited. The search engine classifies and organizes information about the content, structure, and relationships between pages.
Ranking ( Ranking )
When a user enters a query into a search engine, the system searches the index to find the most relevant pages.
Ranking involves assessing which pages are most relevant to a given query, based on hundreds of signals. These signals can include the quality of content, the number and quality of links pointing to the page, the age of the domain, the user's search history, and more.
After evaluating all pages for a given query, the search engine presents them to the user in a specific order, from most to least important.
How the search engine works.
How the search engine works.
How do search engine robots (bots) work? Robot characteristics and their role in the crawling process
Search engine robots, also called bots or spiders, are specialized computer programs whose main task is to crawl the Internet to index pages and update search engine databases. They act a bit like virtual explorers that "travel" the Web, visiting websites and going from one page to another using links.
The bot’s process starts with a list of known URLs, called a seed list. Once a page is visited, the bot “reads” its content, recording relevant information. It then analyzes the links on the page, adding new URLs to its list to visit. This cycle repeats indefinitely, allowing the bot to crawl a huge number of pages in a relatively short period of time.
Crawling pages in Google
Crawling pages in Google
However, search engine bots are not limitless in their activity. They can follow certain rules and restrictions defined by the “robots.txt” file on the page. This file can instruct the bot which parts of the page can be scanned and which should be left unscanned.
The role of bots in the crawling process is crucial. Thanks to them, search engines are able to understand the structure of the Internet, update their databases with new content, and provide users with the latest information. Without the constant work of bots, search engines would not be able to provide up-to-date and relevant results for user queries.